Railway draft-rigging.



H. A HOKE.

RAILWAY DRAFTRIGGING.

APPUCATION FILED :umze. 191s.

Patented J an. 23; 1917.

RH m V u. mg C a @w m m I .Q 1 2% R I m WNW NQLNQN HARRY A. HGKE, OF ALTOONA, PENNSYLVANIA.

RAILWAY DRAFT-RIGGING.

Specification of Letters Patent. @aiented an 23, 1%}12'.

Application filed June 28, 1916. Serial No. 105,835.

To all whom z't may concern:

Be it known that I, HARRY A. Home, a citizen of the United States of America, and

resident of Altoona, inthe county of Blair.

and State of Pennsylvania, have invented a certain new and useful Improvement in Railway Draft-Rigging, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My present invention relates to railway draft rigging of the type in which a draft yoke is pivotally connected to the inner end of the draw'bar, and the object of my invention is to provide a simple, compact and effective draft yoke of the kind specified characterized by its strength and freedom from liability to rupture under the strains of operation.

The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, however, and the advantages possessed by it, reference should be had to the accompanying drawings and descriptive matter in which I have illustrated and described a preferred embodiment of my invention.

Of the drawings: Figure l is a sectional elevation of a portion of a locomotive tender equipped with my improved draft gear; Fig. 2 is a plan view of a portion of the draft gear shown in Fig. 1; and Fig. 3 is a partial section through the draft gear taken on the line 3-3 of Fig. 1.

In the drawings I have illustrated the use of my invention in a locomotive tender as locomotive tenders are commonly provided with draft gear of the type to which my invention pertains. A represents the end sill of the tender; B the buffer casting; C the drawbar carrlc; and D the drawbar which is shown as formed with the usual hollow stem, the upper and lower sides of which are thickened at the inner end as indicated at 13. The drawbar yoke pin- Fl passes through alined apertures in the two thickened portions 13'." The draft yoke, which is pivotally connected to the drawbar through the pin E, comprises abody portion or yoke strap F of U shape, and a member G. The latter, which ordinarily will be a steel casting, comprises a body portion loosely surrounding the drawbar. The ends of the yoke strap F are secured by the rivets H to the upper and lower portions of this body portion. The member G is also provided with tongue like projections G which extend along the inner sides of the legs of the yoke strap F drawbar l), and are thickened at their inner ends. The draft yoke pin E passes through the thickened inner ends of the tongues G as Well as through the legs of the U-shaped yoke strap F. Advantageously in many cases, the legs of the yoke strap F are given additional strength by being widened, as indicated at F at the opposite sides of the apertures provided therein to receive the'pivot pin E.

The construction described has import-ant practical advantages. On account of the simplicity and compactness of the inner end of the yoke construction it is possible to provide the clearance between the sides G of the member G and the sides of the drawbar D required to permit all necessary pivotal movement of the drawbar about the axis of the pin E. This clearance is ob tained, moreover, without requiring any in convenient modification of the tender end sill A to provide the necessary space to receive the draft yoke. The use of the hollow member G rigidly connected to the inner ends of the U-shaped yoke strap F, effectually prevents the ends of the U-shaped yoke member F from spreading. This, of itself, increases the-strength of the draft yoke and of the pivotal connection between it and the drawbar. The elongated bearings for the ends of the yoke pin E provided by causing them to pass through the thickened tongues 11 of the member G as well as through the legs of theyoke strap F desirably stiflens and strengthens the pivotal connection and also adds to the effective life of the latter by increasing the bearing surface for the pin Securing the ends of the yoke strap F to the member G in the manner illustrated, so that a portion only of the pull transmitted by the draft yoke is imparted between the latter and the directly to the yoke strap by the pivot pin I 1 E, through its engagement with the walls erg While in accordance with the provisions of the statutes I have illustrated and described the best form of my invention now known to me, it will be apparent to those skilled in the art that changes can be made in the form of my invention Without departing from its spirit and that some features of my invention may be used without a corresponding use of other features.

Having now described my invention, What I claim as new and desire to secure by Letters Patent, isz

1. In a railway draft gear the combination with the drawbar of a draft yoke pivotally secured thereto and comprising a U- shaped yoke strap, a hollow member loosely surrounding the drawbar to which the ends of said yoke strap are secured, and a draft yoke pin which passes throngh the ends of the draft yoke strap, through said member 20 and through said drawbar, and, thus pivotally connects said yoke and drawbar.

2. A railway draft yoke comprising a U- shaped yoke strap and a" hollow member adapted to loosely surround vthe drawbar to 5 which the yoke is connected and to which the ends of said strap are secured, said member being formed with tongues projecting along the inner sides ofthe legs of said yoke strap, and said yoke being formed with reg- 30 HARRY A. HOKE. I,

or with: 

